WordPress auto login user after registration only from a specific page

Ues this function to redirect admin to dashboard

function admin_login_redirect( $redirect_to, $request, $user )
{
    global $user;
    if( isset( $user->roles ) && is_array( $user->roles ) ) {
        if( in_array( "administrator", $user->roles ) ) {
            return $redirect_to;
        }
    }
}
add_filter("login_redirect", "admin_login_redirect", 10, 3);

For more/brief detail read this article.

Page ID don’t come in quotes, See this line of your

if (is_page('484')){

Change this line like this

//Removed quotes from Page ID
if (is_page(484)){

As an alternate this can be done with Page Slug also like this

//Slug will come in quotes
if (is_page('Type_Page_Slug_Here')){